:root {
    --bg: #0b1220;
    --card: #ffffff;
    --text: #0f172a;
    --muted: #475569;
    --primary: #0e7490;
    --primary-hover: #155e75;
    --border: #cbd5e1;
    --error-bg: #fef2f2;
    --error: #b91c1c;
    --info-bg: #ecfeff;
    --info: #0e7490;
    color-scheme: light;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    font-family: Inter, "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
    color: var(--text);
    background: radial-gradient(circle at 20% 20%, #12304a 0%, var(--bg) 60%);
}

.card {
    width: 100%;
    max-width: 400px;
    background: var(--card);
    border-radius: 12px;
    padding: 32px 28px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.logo { height: 40px; width: auto; }
.product { font-weight: 700; font-size: 18px; color: var(--primary); }
.agency { font-size: 13px; color: var(--muted); }

h1 { font-size: 22px; margin: 0 0 16px; }
p { font-size: 14px; line-height: 1.5; color: var(--muted); }

label { display: block; font-size: 13px; font-weight: 600; margin: 14px 0 6px; }
input {
    width: 100%;
    padding: 10px 12px;
    font-size: 15px;
    border: 1px solid var(--border);
    border-radius: 8px;
}
input:focus { outline: 2px solid var(--primary); outline-offset: 1px; border-color: var(--primary); }

button {
    width: 100%;
    margin-top: 20px;
    padding: 11px;
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    background: var(--primary);
    border: 0;
    border-radius: 8px;
    cursor: pointer;
}
button:hover { background: var(--primary-hover); }

.alert { padding: 10px 12px; border-radius: 8px; font-size: 14px; }
.alert.error { background: var(--error-bg); color: var(--error); }
.alert.info { background: var(--info-bg); color: var(--info); }

.notice { font-size: 12px; margin-top: 18px; text-align: center; }
.notice a { color: var(--primary); }

.policy { font-size: 13px; color: var(--muted); padding-left: 18px; }
.qr { display: flex; justify-content: center; margin: 12px 0; }
.secret code { font-size: 13px; background: #f1f5f9; padding: 2px 6px; border-radius: 4px; word-break: break-all; }